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Discrete self-trapping, soliton interactions, and beam steering in nonlinear waveguide arrays.

- Aceves, De Angelis C, +4 authors Wabnitz
- Physics, Medicine
- Physical review. E, Statistical physics, plasmas…
- 1996

We investigate the self-trapping phenomenon in one-dimensional nonlinear waveguide arrays. We discuss various approximate analytical descriptions of the discrete self-trapped solutions. We analyze… Expand

Theory of electronic diamagnetism in two-dimensional lattices.

The problem of tight-binding electrons in a two-dimensional lattice with a magnetic flux p/q in each plaquette is investigated for p=0,1,3, q=2,3,4,6,8. For fixed electron filling, v, the total… Expand

Cascading of quadratic nonlinearities: An analytical study.

A comprehensive analytical approach to scalar and vectorial interaction in cascaded quadratic nonlinearities is presented. Exact formulas for the intensity as well as the phase modulation in… Expand

Origin of the persistent oscillations of solitary waves in nonlinear quadratic media.

- Etrich, Peschel, Lederer, Malomed, Kivshar
- Physics, Medicine
- Physical review. E, Statistical physics, plasmas…
- 1 October 1996

Recently, solitary waves characterized by a mutual locking of the fundamental and second harmonics in quadratically nonlinear media attracted a lot of attention @1‐10#. The study of these localized… Expand

Collision of solitary waves in media with a second-order nonlinearity.

- Etrich, Peschel, Lederer, Malomed
- Physics, Medicine
- Physical review. A, Atomic, molecular, and…
- 1 November 1995

We consider the collision behavior of self-trapped optical beams in media with a quadratic nonlinearity. It is found that the solitary waves behave similarly to true solitons above a critical… Expand

Linear temperature term of heat capacity in insulating and superconducting La-Ba-Cu-O systems.

- Kumagai, Nakamichi, +4 authors Lederer
- Materials Science, Medicine
- Physical review letters
- 22 February 1988

The heat capacity of La/sub 2-//sub x/Ba/sub x/CuO/sub 4/ was investigated between 0.8 and 10 K. The linear temperature term ..gamma..T of the heat capacity is absent in the antiferromagnetic-ordered… Expand

Adsorption of oxygen on Cu(100). I. Local structure and dynamics for two atomic chemisorption states.

- Lederer, Arvanitis, Comelli, Tröger, Baberschke
- Physics, Medicine
- Physical review. B, Condensed matter
- 15 November 1993

By means of temperature-dependent surface-extended x-ray-absorption fine structure (SEXAFS) measurements we characterize two different chemisorption state of atomic O/Cu(100), one corresponding to a… Expand

Soliton interaction near the zero-dispersion wavelength.

- Uzunov, Gölles, Lederer
- Physics, Medicine
- Physical review. E, Statistical physics, plasmas…
- 1 July 1995

Superconductivity from commensurate flux phases.

We use a renormalized mean-field theory of the {ital t}-{ital J} model to show that flux states closely related to those recently proposed by Anderson, Shastry, and Hristopoulos are stabilized, at… Expand

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